I was hunting around Xbox.com and found this:The Newest Hit Games Are on Windows Phone 8 - Xbox.com
"Beginning this holiday, play the biggest hit games on Windows Phone 8, including fan favorites from great partners such as Rovio, Gameloft, Miniclip, Halfbrick, Glu and Microsoft Studios. Join us in welcoming the first set of fun-to-play titles from Xbox for Windows Phone 8! "
It looks like more WP8 Games will be coming out around Christmas.

EDIT: (Tried to say WP8 Games, but accidentally forgot the games part).